公园很热闹用英语怎么说

"The park is bustling" 或 "The park is busy" 可以用来表示公园很热闹。

"Bustling" 是 "繁忙" 的意思，来源于动词 "bustle"，意思是 "忙乱地移动"。

"Busy" 是 "忙碌" 的意思，来源于动词 "busy"，意思是 "忙于做某事"。

例句：

The streets of New York are always bustling with people.
(纽约的街道总是人来人往繁忙。)
He was too busy to talk to me.
(他太忙了，没时间和我说话。)